Mycoplasma is

The correct option is prokaryotic and unicellular.

To understand why this is the correct classification for Mycoplasma, let's break down its biological characteristics step-by-step:

1. Why is it prokaryotic?
Prokaryotes are organisms whose cells lack a membrane-bound nucleus and other membrane-bound organelles (such as mitochondria or endoplasmic reticulum). Mycoplasma species are a group of bacteria. Because they are bacteria, their genetic material (DNA) floats freely in the cytoplasm in a region called the nucleoid, without being enclosed in a nuclear membrane. Therefore, they are classified as prokaryotes.

2. Why is it unicellular?
Unicellular organisms consist of a single cell that performs all the life processes necessary for survival. Mycoplasma exists as independent, single-celled organisms. Each individual cell is capable of reproduction and metabolism on its own, making it unicellular.

3. Distinctive features of Mycoplasma:
An important and unique feature of Mycoplasma is that they completely lack a cell wall around their cell membrane. This lack of a cell wall makes them naturally resistant to many common antibiotics (like penicillin) that target cell wall synthesis, and it also makes them the smallest known free-living prokaryotic organisms.

By combining these characteristics, we find that Mycoplasma is both prokaryotic and unicellular.